<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    ul {
      list-style: none;
      width: 200px;
      margin: 100px auto;
      padding: 0;
    }
    ul li {
      float: left;
      width: 24px;
      height: 24px;
      background: url('./icon.png') no-repeat;
      margin: 10px;
    }
  </style>
</head>
<body>
  <ul>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
  </ul>

  <script>
    var list = document.getElementsByTagName('li')

    for(var i = 0; i < list.length; i++) {
      list[i].style.backgroundPositionY = i * -44 + 'px'
    }
  </script>
</body>
</html>